<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/welcome' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item><a href="/">权限管理</a></el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <!-- 添加角色按钮区域 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRole"> 添加角色 </el-button>
        </el-col>
      </el-row>
      <!-- 角色列表区域 -->
      <el-table :data="rolelist" border stripe>
        <el-table-column type="expand">
          <template v-slot="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.roleId"
            >
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag
                  closable
                  @close="removeRightById(scope.row, item1.id)"
                  >{{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过for循环嵌套渲染二级权限 -->
                <el-row
                  :class="['bdtop', i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                      >{{ item2.authName }}</el-tag
                    >
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <!-- 通过for循环渲染出三级权限 -->
                    <el-tag
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      type="warning"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                      >{{ item3.authName }}</el-tag
                    >
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{ scope.row }}</pre> -->
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template v-slot="scope">
            <el-button
              size="mini"
              type="primary"
              icon="el-icon-edit"
              @click="showEditRoles(scope.row.id)"
              >编辑</el-button
            ><el-button
              size="mini"
              type="danger"
              icon="el-icon-delete"
              @click="delCurrentRoles(scope.row.id)"
              >删除</el-button
            ><el-button
              size="mini"
              type="warning"
              icon="el-icon-setting"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 添加角色对话框 -->
    <el-dialog
      title="添加角色"
      :visible.sync="addRoleDialogVisible"
      width="30%"
      @close="addRoleDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        ref="addRoleFormRef"
        :model="addRoleForm"
        label-width="80px"
        :rules="addRoleFormRules"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addRoleForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addRoleForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 编辑角色对话框 -->
    <el-dialog
      title="修改角色"
      :visible.sync="editDialogVisible"
      width="30%"
      @close="editDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form
        ref="editFormRef"
        :model="editForm"
        label-width="80px"
        :rules="editFormRules"
      >
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配权限对话框 -->
    <el-dialog
      title="修改角色"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClosed"
    >
      <!-- 内容主体区域 -->
      <!-- 树形控件 -->
      <el-tree
        :data="setRightForm"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
import {
  getRolesAPI,
  editRolesAPI,
  subEditRolesAPI,
  delRoleRightAPI,
  setAllRightAPI,
  allotRoleAPI,
  delEditRolesAPI,
  addRolesAPI,
} from '@/api'
export default {
  data() {
    return {
      // 所有角色列表数据
      rolelist: [],
      //   监听编辑角色对话框的关闭事件
      editDialogVisible: false,
      //   查询到的角色信息
      editForm: {},
      //   修改角色信息表单校验规则
      editFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
          { min: 2, max: 8, message: '长度在2-8个字符', trigger: 'blur' },
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3-10个字符', trigger: 'blur' },
        ],
      },
      // 添加角色输入框验证规则
      addRoleFormRules: {
        roleName: [
          { required: true, message: '请输入角色名称', trigger: 'blur' },
          { min: 2, max: 8, message: '长度在 2 到 8 个字符', trigger: 'blur' },
        ],
        roleDesc: [
          { required: true, message: '请输入角色描述', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '长度在 3 到 10 个字符',
            trigger: 'blur',
          },
        ],
      },

      // 控制添加角色对话框的显示与隐藏
      addRoleDialogVisible: false,
      // 保存增加角色信息
      addRoleForm: {},
      // 控制分配权限对话框的显示与隐藏
      setRightDialogVisible: false,
      // 获取到的权限数据
      setRightForm: {},
      // 树形控件的属性绑定对象
      treeProps: {
        label: 'authName',
        children: 'children',
      },
      // 默认选中的节点Id值数组
      defKeys: [],
      // 保存当前选中的即将分配权限选项的ID
      roleId: '',
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    //获取角色列表
    async getRolesList() {
      const { data: res } = await getRolesAPI()
      //   console.log(res)
      if (res.meta.status !== 200)
        return this.$message.error('获取角色列表失败!')
      this.rolelist = res.data
    },
    // 展示编辑角色信息的对话框
    async showEditRoles(id) {
      this.editDialogVisible = true
      const { data: res } = await editRolesAPI(id)
      //   console.log(res)
      if (res.meta.status !== 200)
        return this.$message.error('查询角色信息失败!')
      this.editForm = res.data
      // console.log(this.editForm)
    },
    // 修改角色信息并提交
    async editRoleInfo() {
      const { data: res } = await subEditRolesAPI(this.editForm.roleId, {
        roleName: this.editForm.roleName,
        roleDesc: this.editForm.roleDesc,
      })
      //   console.log(res)
      if (res.meta.status !== 200)
        return this.$message.error('修改角色信息失败!')
      this.$message.success('修改角色信息成功!')
      this.editDialogVisible = false
      this.getRolesList()
    },
    // 修改角色信息弹出层关闭重置表单
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 添加角色对话框的显示与隐藏
    addRole() {
      this.addRoleDialogVisible = true
    },
    // 监听添加角色对话框关闭事件
    addRoleDialogClosed() {
      this.$refs.addRoleFormRef.resetFields()
    },
    // 添加角色信息并提交
    async addRoleInfo() {
      // console.log(this.addRoleForm)
      const { data: res } = await addRolesAPI({
        roleName: this.addRoleForm.roleName,
        roleDesc: this.addRoleForm.roleDesc,
      })
      console.log(res)

      if (res.meta.status !== 201) return this.$message.error('新增角色失败！')
      this.$message.success('新增角色成功！')
      this.addRoleDialogVisible = false
      this.getRolesList()
    },
    // 删除角色信息
    async delCurrentRoles(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除！')
      const { data: res } = await delEditRolesAPI(id)
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error('删除角色失败！')
      this.$message.success('删除角色成功！')
      this.getRolesList()
    },
    // 根据id删除对应的权限
    async removeRightById(role, id) {
      // 弹框提示是否要删除
      const confirmResult = await this.$confirm(
        '此操作将永久删除该文件, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      // console.log(confirmResult)
      if (confirmResult !== 'confirm')
        return this.$message.error('取消了删除！')
      const { data: res } = await delRoleRightAPI(role.id, id)
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error('删除权限失败！')
      this.$message.success('删除权限成功！')
      // this.getRolesList()
      role.children = res.data
    },
    // 展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      const { data: res } = await setAllRightAPI('tree')
      if (res.meta.status !== 200)
        return this.$message.error('获取权限数据失败!')
      // 把获取到的权限数据保存到data中
      this.setRightForm = res.data
      // console.log(this.setRightForm)
      // 递归获取三级节点的Id
      this.getLeafKeys(role, this.defKeys)
      // console.log(this.defKeys)
      this.setRightDialogVisible = true
    },
    // 通过递归的形式，获取角色下所有三级权限的id，并保存到defKeys 数组中
    getLeafKeys(node, arr) {
      if (!node.children) return arr.push(node.id)
      node.children.forEach((item) => this.getLeafKeys(item, arr))
    },
    // 监听分配权限对话框的关闭事件
    setRightDialogClosed() {
      this.defKeys = []
    },
    // 点击为角色分配权限
    async allotRights() {
      console.log(this.roleId)
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ]
      const idStr = keys.join(',')
      console.log(idStr)
      const { data: res } = await allotRoleAPI(this.roleId, { rids: idStr })
      console.log(res)
      if (res.meta.status !== 200) return this.$message.error('分配权限失败！')
      this.$message.success('分配权限成功！')
      this.getRolesList()
      this.setRightDialogVisible = false
    },
  },
}
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>